1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "SurfaceControl" 18 19 #include <stdint.h> 20 #include <errno.h> 21 #include <sys/types.h> 22 #include <sys/stat.h> 23 24 #include <android/native_window.h> 25 26 #include <utils/CallStack.h> 27 #include <utils/Errors.h> 28 #include <utils/Log.h> 29 #include <utils/threads.h> 30 31 #include <binder/IPCThreadState.h> 32 33 #include <ui/DisplayInfo.h> 34 #include <ui/GraphicBuffer.h> 35 #include <ui/Rect.h> 36 37 #include <gui/ISurfaceComposer.h> 38 #include <gui/Surface.h> 39 #include <gui/SurfaceComposerClient.h> 40 #include <gui/SurfaceControl.h> 41 42 namespace android { 43 44 // ============================================================================ 45 // SurfaceControl 46 // ============================================================================ 47 48 SurfaceControl::SurfaceControl( 49 const sp<SurfaceComposerClient>& client, 50 const sp<IBinder>& handle, 51 const sp<IGraphicBufferProducer>& gbp) 52 : mClient(client), mHandle(handle), mGraphicBufferProducer(gbp) 53 { 54 } 55 56 SurfaceControl::~SurfaceControl() 57 { 58 destroy(); 59 } 60 61 void SurfaceControl::destroy() 62 { 63 if (isValid()) { 64 mClient->destroySurface(mHandle); 65 } 66 // clear all references and trigger an IPC now, to make sure things 67 // happen without delay, since these resources are quite heavy. 68 mClient.clear(); 69 mHandle.clear(); 70 mGraphicBufferProducer.clear(); 71 IPCThreadState::self()->flushCommands(); 72 } 73 74 void SurfaceControl::clear() 75 { 76 // here, the window manager tells us explicitly that we should destroy 77 // the surface's resource. Soon after this call, it will also release 78 // its last reference (which will call the dtor); however, it is possible 79 // that a client living in the same process still holds references which 80 // would delay the call to the dtor -- that is why we need this explicit 81 // "clear()" call. 82 destroy(); 83 } 84 85 bool SurfaceControl::isSameSurface( 86 const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs) 87 { 88 if (lhs == 0 || rhs == 0) 89 return false; 90 return lhs->mHandle == rhs->mHandle; 91 } 92 93 status_t SurfaceControl::setLayerStack(int32_t layerStack) { 94 status_t err = validate(); 95 if (err < 0) return err; 96 const sp<SurfaceComposerClient>& client(mClient); 97 return client->setLayerStack(mHandle, layerStack); 98 } 99 status_t SurfaceControl::setLayer(int32_t layer) { 100 status_t err = validate(); 101 if (err < 0) return err; 102 const sp<SurfaceComposerClient>& client(mClient); 103 return client->setLayer(mHandle, layer); 104 } 105 status_t SurfaceControl::setPosition(float x, float y) { 106 status_t err = validate(); 107 if (err < 0) return err; 108 const sp<SurfaceComposerClient>& client(mClient); 109 return client->setPosition(mHandle, x, y); 110 } 111 status_t SurfaceControl::setSize(uint32_t w, uint32_t h) { 112 status_t err = validate(); 113 if (err < 0) return err; 114 const sp<SurfaceComposerClient>& client(mClient); 115 return client->setSize(mHandle, w, h); 116 } 117 status_t SurfaceControl::hide() { 118 status_t err = validate(); 119 if (err < 0) return err; 120 const sp<SurfaceComposerClient>& client(mClient); 121 return client->hide(mHandle); 122 } 123 status_t SurfaceControl::show() { 124 status_t err = validate(); 125 if (err < 0) return err; 126 const sp<SurfaceComposerClient>& client(mClient); 127 return client->show(mHandle); 128 } 129 status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) { 130 status_t err = validate(); 131 if (err < 0) return err; 132 const sp<SurfaceComposerClient>& client(mClient); 133 return client->setFlags(mHandle, flags, mask); 134 } 135 status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) { 136 status_t err = validate(); 137 if (err < 0) return err; 138 const sp<SurfaceComposerClient>& client(mClient); 139 return client->setTransparentRegionHint(mHandle, transparent); 140 } 141 status_t SurfaceControl::setAlpha(float alpha) { 142 status_t err = validate(); 143 if (err < 0) return err; 144 const sp<SurfaceComposerClient>& client(mClient); 145 return client->setAlpha(mHandle, alpha); 146 } 147 status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) { 148 status_t err = validate(); 149 if (err < 0) return err; 150 const sp<SurfaceComposerClient>& client(mClient); 151 return client->setMatrix(mHandle, dsdx, dtdx, dsdy, dtdy); 152 } 153 status_t SurfaceControl::setCrop(const Rect& crop) { 154 status_t err = validate(); 155 if (err < 0) return err; 156 const sp<SurfaceComposerClient>& client(mClient); 157 return client->setCrop(mHandle, crop); 158 } 159 160 status_t SurfaceControl::validate() const 161 { 162 if (mHandle==0 || mClient==0) { 163 ALOGE("invalid handle (%p) or client (%p)", 164 mHandle.get(), mClient.get()); 165 return NO_INIT; 166 } 167 return NO_ERROR; 168 } 169 170 status_t SurfaceControl::writeSurfaceToParcel( 171 const sp<SurfaceControl>& control, Parcel* parcel) 172 { 173 sp<IGraphicBufferProducer> bp; 174 if (control != NULL) { 175 bp = control->mGraphicBufferProducer; 176 } 177 return parcel->writeStrongBinder(bp->asBinder()); 178 } 179 180 sp<Surface> SurfaceControl::getSurface() const 181 { 182 Mutex::Autolock _l(mLock); 183 if (mSurfaceData == 0) { 184 mSurfaceData = new Surface(mGraphicBufferProducer); 185 } 186 return mSurfaceData; 187 } 188 189 // ---------------------------------------------------------------------------- 190 }; // namespace android 191
